Brake mechanism



ril 5 1927. Ap H. E. BARTscH BRAKE MECHANISM Filed March s. 192e 2sheets-sheet 1 April 5 1927.

H, E. BARTscH BRAKE MECHANISM Filed umn s. 192e 2 sheets-sheet zPatented Apr. 5, 1927.

UNITED STATES HERBERT E. BARTSCH, OF CIIICAG, ILLINO ASSIGNOR TOUNIVERSAL DRAFT GEAR ATTACHMENT CO., A CORPORATION OF ILLINOIS.

BRAKE MEcHANIsM.

Application filed March 8, 1925. Serial No. 93,032.

This invention relates to brake mechanism and more particularly to brakemechanism 'for railway cars.

One of the objects ot' the invention is the provision of new andimproved means for supporting the multiplying or reversible lever andattendant mechanism.

Another object of the invention is the provision of new and improvedmeans for supporting the multiplying lever whereby the vibrationincident tothe movement of the car will cause the support toautomatically move to inoperative position when the brakes are released.

A still further object oi the invention is the provision oi brakeoperating mechanism that is cheap to manu-facture, easily assembled,eiiicient in operation, rugged in construction, and that is not likelyto become deranged'or get out of order.

Other and further objects and advantages of the invention will appear'from the fol-` lowing description taken in connection with theaccompanying drawings, in which liig. 1 is a longitudinal verticalsection ot a port-ion o1c a` car showing the invention in positionthereon;

Fig. 2 is a plan view of a portion oi a car, showing the invention inposition thereon;

Fi 3 is a top plan view of a portion o'lf a car showing a portion of theinvention in position thereon;

Fig. et is a side elevation with parts in section a '-d parte brokenaway;

IF is a detail sectional view on the line 5 o-E Fig. t; and

Fig. 6 is a vertical section on broken line G--G of Fig. A1.

On the drawings, the reference character 10 designates a railway carhaving the longitudinally arranged sills 11 and the transverse members12, 13 and 14. The step vfor supporting the brake drum 15 is shown at 16and the brake stal at 17. Thel brake stati' is provided with the usualWheel or lever 18 for rotating the brake stati for applying the brakes,as is usual in such constructions. For convenience of description only,the end oit' the car toward the right in Fig. 1 will be considered thefront of the car.

The car is provided with the usual air brake cylinder 19, the piston 21oit' which is connected to the brake lever 22 for applying the brakeswith compressed air in the usual manner.

Suitable means are provided for applying the brakes by hand power fromthe brake staff 17. This means comprises an expansible and contractibleconnection 2O between the brake stati and lever, including a reversibleor multiplying lever 23 which is so constructed and arranged that on theinitial rotation of the brake stall the slack in said connection will betaken up quickly, and on further movement the brakes will be appliedwith great force. l

As shown, one end of the connection is in the form ot' a. flexiblemember or cable, as the chain 21, which is secured'to the drum 15 and isadapted to be wound there-A on. The opposite end or' the connection 2O1s also in the toi-1n of a flexible member or cable, as the chain 27which extends about the grooved reversible lever 23 and .is se-` curedin the anchor member 2li in any suitable manner. As shown, it islattached in the manner disclosed in patent to VVrigl-ey, No. 1,543,467.The anchor member is connected to a support 25 which is rigidlyconnected to the frame work of the car. I

The cable or chain 27 is connected to the reversible lever 23 as at 30in any suitable manner. The reversible lever and the means forconnecting the cable thereto may be and preferably are substantially thesame that disclosed in patent to Camp and Bartsch, No. 1,543,470, June23, 1925, and need not be further described.

The two chains or cables 21 and 27 are preferably connected by a rod 28which is slidably supported. by guides 29 and 31. The use of a rodeliminates the necessity of taklng up a great amount of slack inapplying the brakes, as would be necessary were a single cable employedbetween the brake drum and the anchor, owing to the sag in the cable.

The reversible lever .3 is rotatably mounted in a bracket or jaw 32which is slidably mounted on the inclined support 3S. The bracket 32 isot' any suitable form, that shown being bifurcated to form a jaw andhaving one or more convex bearing surfaces 84 for slidably engaging thesupport 38. The furcations are united at their lower rear portions, asat l0.

The bracket or jaw 32 is connected to the izontal slot 3G and a verticalslot 37 intercepting` each other and adapted to receive adjacent linksot one end ot the chain 38 ior securing the saine thereto. The verticalslot 37 toi-ms shoulders 42 against which the link 43 ot` the chainengages to anchor the same. A cotter pin la in back oi the vertical linkis adapted to prevent the disen` nagenientot' the chain lrom the jawmenilier. The slots are so constructed that the chain 38 cannot beremoved unless the link a5 is iii-st turned to vertical position, aiterwhich the chain may be disengaged 'by movinl@r the same forwardly. Theopposite end oit' the chain 38 is secured to the lever Q2 and. piston 2las clearly shown in Fig. l of the drawings. The use of a flexibleconnection between the brake lever and the jaw 32 permits the brakes tobe applied by the piston il without atl'eetingthe handbrake mechanisin.

The support 233 is attached at one end to the cross member l2 and hasits opposite end oii'et and attached to the sill ll as clearly shown inFig. 3.

In applyingthe brakes by hand the brake stall' 17 is rotated to wind thechain 2l on the drum l5 which in turn will rotate the reversible lever23. The initial rotation ot the lever 23 will take up the slack rapidlyand further rotation will set the brakes with the application otconsiderable power. The aw 32 will slide upwardly along the guide orsupport 33. W'hen the brakes are released the vibration ot the car willcause the jaw 3Q. to slide downwardly along` the support 33 b v gravity.

It if thought from the "foregoing taken in connection with theaccompanying` drawings that the construction and operation oia my devicewill be apparent to those skilled in the art and that various changes insize, shape, proportion and details ot construction may be niade withoutdeparting' from the spirit. and scope ot' the appended claims.

I claim as my invention:

l. In a brake mechanism 'for railway cars, a brake lever, a brake stati,an expansible and conti'actible connection between said stati' andlever, said connection comprising' a reversible lever, an inclinedsupport, and means slidably mounted on said support for supporting saidreversible lever.

Q. In a brake mechanism for railway cars, a brake lever, a biake statt,a connection including a` reversible lever operatively connected to saidstaff and lever, a connector jaw in which said lever is pivoted,inclined supporting` means, and means for slidably mounting saidconnector jaw o n said supporting means.

3. In a railway brake mechanism, an inclined support, a jaw havinga slotfor engaging said support, a reversi'ble grooved lever journaled in saidj aw to rotate in said slot, and cable anchoring means at one end ot'said jaw.

4i. In a. brake mechanism toi' railway cars, a brake staff, a brakelever, an expansible and contractible connection including:r asupporting member, between said stati'4 and lever, and means torsupporting' said member and ior Causingv the same to move to elevatedposition during` the application of the brake, said member being`returned by gravity to inoperative position when said brakes arereleased.

5. In a brake mechanism for railway cars, an inclined support, a awmember having a slot for receiving said support, and a reversible leverrotatably mounted in said slot, said j aw member being provided at itslower portion, opposite said ieversible lever, with means for anchoringa chain.

6. In a brake mechanism, a jaw member for supporting a reversible lever,an inclined supportingr bar, said member being lprovided with a slot forreceivingl said supporting` bar, one end ot the lower portion ot saidmember being,- provided with alin'ed openings extending transverselytherethrough and the opposite end being provided with vertical andhorizontal intersecting slots tor 'forming an anchor for a chain.

In a railway brake mechanism, a brake stati", a brake lever, expansibleand contractible mechanism between said statt' and lever. an inclinedsupporting member, means slidably mounted on said ineii'iber t'orsiu'iporting a portion oit said n'ieehanix-ini, said means sliding` inthe direction of said stati during' the application ot the brakes andsliding; by gravity in the opposite direction when the brakes arereleased.

S. In combination wth the undertraining of a railway car, brakeoperatingl mechanism located beneath said under'framing, said mechanismcomprising a. quick takeup device, inclined supports secured to saidundertraming, and means for slidably mountingsaid device on saidsupports.

In testimony whereof I affix my signature.

HERBERT E. BARTSCH.

